1. a Ioffe Physico-Technical Institute, Russian Academy of Sciences , Polytekhnicheskaya 26, St. Petersburg, 194021, Russia
2. b Share Holding Co. Plastpolymer , Polyustrovskii pr. 32, St. Petersburg, 195108, Russia
3. c Institute of Macromolecular Compounds, Russian Academy of Sciences , V.O. Bol'shoi pr. 31, St. Petersburg, 199004, Russia